Lyon president Jean-Michel Aulas said he believed Aurier's behaviour was "approaching" a sackable offence.

"If it happened at Lyon, based on what I know and with images that I couldn't control, I would hand down an extremely serious penalty," he told reporters after Lyon's win over Caen on Sunday.

"Because as a player you can't -- whatever the level -- publicly criticise not only your teammates, and even less so your manager."

Saint-Etienne boss Christophe Galtier said PSG had been "attacked" and added: "When I see what he's allowed himself to say about his teammates, about the man who went to find him at Toulouse in order for him to break through at the highest level with PSG, it's difficult to digest.

"Obviously there's solidarity between managers at times like this and I'm united with Laurent. PSG are going to have to try to manage the best they can a crisis that's arrived at an important time for the club, coming from a player who was nothing special before coming to PSG.

"He was in contact with maybe the best European players and in contact with a great manager. I hope he won't be in contact with anyone any longer."

Former Chelsea defender Frank Leboeuf told Telefoot he felt Aurier was "finished" at PSG, while ex-PSG player Jean-Michel Larque told Le Parisien that in his day it would be "out of the question" for Aurier to play for the club again.